In $2010,$ the FTC added all of the following recommendations to its privacy guidelines except:

Question $10$Select one:

a$.$

Firms should limit the length of time that any personal data is stored to six months or less.

b$.$

Consumers should be able to review and contest the accuracy and completeness of data.

c$.$

Firms should require consumer consent and provide clear options to opt out of data collection.

d$.$

Firms should build products and services that protect privacy.

e$.$

Firms should increase the transparency of their data collection.$\text{'}$